ABAP Select data from SAP table IMAINTPFHIERNODE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IMAINTPFHIERNODE table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to IMAINTPFHIERNODE. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the IMAINTPFHIERNODE table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_IMAINTPFHIERNODE TYPE STANDARD TABLE OF IMAINTPFHIERNODE,
      WA_IMAINTPFHIERNODE TYPE IMAINTPFHIERNODE,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <IMAINTPFHIERNODE> TYPE IMAINTPFHIERNODE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IMAINTPFHIERNODE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IMAINTPFHIERNODE
  INTO TABLE IT_IMAINTPFHIERNODE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMAINTPFHIERNODE
*  INTO TABLE @DATA(IT_IMAINTPFHIERNODE2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_IMAINTPFHIERNODE INDEX 1 INTO DATA(WA_IMAINTPFHIERNODE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IMAINTPFHIERNODE ASSIGNING <IMAINTPFHIERNODE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMAINTPFHIERNODE>-MANDT = 1.
<IMAINTPFHIERNODE>-DFSMAINTPLATFORMUUID = 1.
<IMAINTPFHIERNODE>-DFSMAINTPLATFORMHIERID = 1.
<IMAINTPFHIERNODE>-DFSMAINTPARENTPLATFORMHIERID = 1.
<IMAINTPFHIERNODE>-DFSMAINTPLATFORMID = 1.

ENDLOOP.

LOOP AT IT_IMAINTPFHIERNODE INTO WA_IMAINTPFHIERNODE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMAINTPFHIERNODE-DFSMAINTPARENTPLATFORMUUID, sy-vline,
  WA_IMAINTPFHIERNODE-DFSMAINTPLATFORMTYPE, sy-vline,
  WA_IMAINTPFHIERNODE-DFSMAINTPLATFORMSHORTNAME, sy-vline,
  WA_IMAINTPFHIERNODE-DFSMAINTPLATFORMLONGNAME, sy-vline,
  WA_IMAINTPFHIERNODE-DFSMAINTPLATFORMDESCRIPTION, sy-vline,
  WA_IMAINTPFHIERNODE-DFSMAINTPARTNERFUNCTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMAINTPFHIERNODE you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_IMAINTPFHIERNODE TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_IMAINTPFHIERNODE INTO WA_IMAINTPFHIERNODE.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IMAINTPFHIERNODE_STR, 
MANDT TYPE STRING,
DFSMAINTPLATFORMUUID TYPE STRING,
DFSMAINTPLATFORMHIERID TYPE STRING,
DFSMAINTPARENTPLATFORMHIERID TYPE STRING,
DFSMAINTPLATFORMID TYPE STRING,
DFSMAINTPARENTPLATFORMUUID TYPE STRING,
DFSMAINTPLATFORMTYPE TYPE STRING,
DFSMAINTPLATFORMSHORTNAME TYPE STRING,
DFSMAINTPLATFORMLONGNAME TYPE STRING,
DFSMAINTPLATFORMDESCRIPTION TYPE STRING,
DFSMAINTPARTNERFUNCTION TYPE STRING,
DFSMAINTPLATFORMOWNERID TYPE STRING,
DFSMAINTISPLATFORMINACTIVE TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
DFSMAINTISROOTPLATFORM TYPE STRING,
DFSMAINTPLTFRMSTSCRITLTYVALUE TYPE STRING,
DFSMAINTPARENTPLATFORMID TYPE STRING,
DFSMAINTPLATFORMOWNERNAME TYPE STRING,
DFSMAINTPLATFORMSTATUSTEXT TYPE STRING,
DFSMAINTPLATFORMTYPETEXT TYPE STRING,
DFSMAINTPLATFORMTYPEFOED TYPE STRING,
PARTNERFUNCTIONNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMAINTPFHIERNODE_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_IMAINTPFHIERNODE_STR-MANDT sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMUUID sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMHIERID sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPARENTPLATFORMHIERID sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMID sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPARENTPLATFORMUUID sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMTYPE sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMSHORTNAME sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMLONGNAME sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMDESCRIPTION sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPARTNERFUNCTION sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMOWNERID sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTISPLATFORMINACTIVE sy-vline 
WA_IMAINTPFHIERNODE_STR-CREATIONDATETIME sy-vline 
WA_IMAINTPFHIERNODE_STR-CREATEDBYUSER sy-vline 
WA_IMAINTPFHIERNODE_STR-LASTCHANGEDATETIME sy-vline 
WA_IMAINTPFHIERNODE_STR-LASTCHANGEDBYUSER sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTISROOTPLATFORM sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLTFRMSTSCRITLTYVALUE sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPARENTPLATFORMID sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMOWNERNAME sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMSTATUSTEXT sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMTYPETEXT sy-vline 
WA_IMAINTPFHIERNODE_STR-DFSMAINTPLATFORMTYPEFOED sy-vline 
WA_IMAINTPFHIERNODE_STR-PARTNERFUNCTIONNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.